When you move a fridge or freezer you need to let them stand for a couple of hours prior to turning back on again especially if you put on its side or turn it upside down.
This helps the gas in the pipes settle down I would suggest you turn it of for a couple of hours then turn it on again see if that helps.
Regards Craig
It is possible that there are more things wrong but my fridge freezer did that and I had to refill it with Freon gas. You need to get someone who knows what they are doing.
Could be low on Freon gas but if you get into the working parts to repair them probably cost more than it's worth to repair. You need a repair man to check it out.